An ACT error log is a running list of every miss with four fields: section, topic, why you missed it, and the next drill. Without those four, another practice test is just a rerun. Students who jump scores review more than they test. The log is how you force the review.
The four columns
- Address: English Q14, Math Q31, Reading passage 3 Q6.
- Topic:comma splice, functions, inference—not "I was dumb."
- Cause: content, careless, or timing. Only one.
- Next action: ten comma drills, one timed Math set, reread the sentence before you answer.
A spreadsheet, a notes app, or paper all work. Fancy tags do not raise scores.
How to fill it after a test
Score the form first. Then walk every miss and every lucky guess while the test is still warm—same day. If you cannot explain the right answer in one sentence, it is a content miss. If you can, it is careless or timing: careless mistakes.
How to use it the next week
Sort by topic. Drill the two topics that appear most. Do not reopen a full test until those two shrink. If the log is all timing, change the clock plan, not the textbook: time per question.
When the log says stop testing
If three official-style tests in a row show the same three topics, another Saturday full-length will not help. That plateau pattern: not improving on practice tests.
The bottom line
Four columns, filled the same day, used to pick the next drill. The log is the study plan.
Start practicing
Start with a free diagnostic, then drill your weak spots with 15-question quizzes and track how you're doing across Reading, English, and Math. Compare plans whenever you're ready to go further.
This article offers general ACT prep guidance. The ACT can change from year to year, including its format, scoring, policies, test dates, and fees, so always confirm the latest details on the official ACT website at act.org before you make decisions. ACT® is a registered trademark of ACT, Inc. thirty-six is not affiliated with, endorsed by, or sponsored by ACT.